Storage Subsystem configuration. 
Root User ID. The UID of the user who has root access privileges to the HPSS namespace. This only 
applies if the Root Is Superuser flag is set. 
COS Change Stream Count.  The number of background threads that run in the Core Server to process 
Class of Service change requests. This field may be overridden on the Storage Subsystem configuration.
Global Flags:
Root Is Superuser. If checked, root privileges are enabled for the UID specified in the Root User ID 
field. If the box is not checked, the UID specified in the Root User ID field will not have root  privileges. 
Root access privileges grant the specified user the same access rights to each namespace obj ect as the 
object’s owner. 
Can change UID to self if has Control Perm.  If checked, then when a user has control access  to an 
object, the user can take over ownership of the object by changing the UID of the object to  the UID 
associated with the user.
Can change UID if has Delete Perm on Security ACL.  If checked, then when a user is listed with  
delete permission in the security ACL of the CORE server that owns the object,  the use r can change the 
UID of the object to any valid UID. 
Object names can contain unprintable characters.  If checked, then users of the HPSS system may 
create objects (e.g., files, directories, etc.) with names containing unprinta ble characters as viewed 
through the 7 bit ASCII character set. If this option is off, any attempt to name an object using 
unprintable characters will be disallowed. The range of printable char acters is 0x20 (blank) through 0x7E 
(tilde) in the 7 bit ASCII character set.
4.2.  Storage Subsystem s Every HPSS system consists of at least one subsystem.  This chapter provides instructions and support ing 
information for creating, modifying, and deleting them.
For a conceptual overview of subsystems, refer to the HPSS Installation Guide, specifical ly Storage 
Subsystems in Sections 2.2.7 and 2.3.3.
4.2.1.  Subsystems List  WindowHPSS Management Guide November 2009
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